Home / 3,949.15-5,449.80-2,180.75

Finding the Fourth Proportional to 3,949.15, 5,449.80 and 2,180.75

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Solution

The fourth proportional to 3,949.15, 5,449.80 and 2,180.75 is: 3,009.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.15 : 5,449.80 = 2,180.75 : x
  2. Step 2: Convert to fraction form
    3,949.15/5,449.80 = 2,180.75/x
  3. Step 3: Cross multiply
    3,949.15x = 5,449.80 × 2,180.75
  4. Step 4: Simplify right side
    3,949.15x = 11,884,651.35
  5. Step 5: Solve for x
    x = 11,884,651.35/3,949.15
  6. Step 6: Final answer
    x = 3,009.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.